Abstract Samples of efflorescences and encrustations of hydrothermal origin were collected at Sousaki (Greece) and analysed for their mineralogical (XRD) and chemical composition. Solutions obtained both from mineralization with HNO3 and from leaching with deionised water were analysed for major (ICP-OES), minor and trace metals (ICP-MS) and sulfate contents (IC). Results evidence the dependence of the chemical and mineralogical composition on micro-environmental conditions i.e. humidity, oxygen-rich or -poor environment, exposed or sheltered from meteoric agents. In fact, the presence of highly soluble sulfate minerals with elevated contents of many metals (e.g. Mg, Al, Fe, Mn, Cr, Ni, etc.) further underscores the important influence of hydrothermal activity on elements' mobility, whilst the sometimes very high concentrations in toxic elements like Al, Cr, Ni suggest also possible environmental impacts.

中文翻译：

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热液蚀变过程对 Sousaki solfataric 油田（科林西亚 - 希腊）的元素迁移率和潜在环境影响的影响

摘要 在 Sousaki（希腊）收集了水热成因的风化和结壳样品，并分析了它们的矿物学 (XRD) 和化学成分。用 HNO3 矿化和用去离子水浸出的溶液分析了主要 (ICP-OES)、次要和痕量金属 (ICP-MS) 和硫酸盐含量 (IC)。结果证明化学和矿物成分依赖于微环境条件，即湿度、富氧或贫氧环境、暴露于或免受大气因素影响。事实上，许多金属（如镁、铝、铁、锰、铬、镍等）含量较高的高溶解性硫酸盐矿物的存在进一步强调了热液活动对元素迁移率的重要影响，